Do the e350 and f350 use the same frame?

The Ford E-350 and F-350 do not use the same frame. The E-350 is a van built on a platform designed for passenger and cargo transport, while the F-350 is a heavy-duty pickup truck with a chassis designed for towing and hauling. Although they share some components and are both part of Ford's commercial vehicle lineup, their frames are specifically engineered for their distinct purposes.